Honest Question to Atheists - Best Argument?

[Jenny A]

Has there ever been a Christian argument, or something a Christian said, that made you, for even a split second, question whether your current atheistic stance is right?

Not an argument per se.  I've never heard a proof for Christianity that didn't sound like what it was, a fallacy used to justify pre-existing belief.   The only exception being teleological arguments.  I think people have been convinced by complexity and grandeur of the world that there must be a god to create it.  And if any argument ever came close for me, that would be it. But I'm afraid even a moderate science education tends to kill it.  The wonder in the world increases with knowledge of how it works, but the sense of an outside designer decreases.

What would occasionally pull me in the direction of Christianity as a child is the absolute certainty of some believers I respected/loved.   The statement that they simply knew, suggested that maybe I was missing some way of knowing.  As a teen, I realized that they all knew rather different gods, which suggested to me that maybe they didn't really know, just thought they did.

Even if the argument turned out to be completely fabricated or disprovable, did it at the very least draw you closer to believing the Bible is God's Word and all that such a belief entails?

Not really.  None of the arguments raised has anything to do with the Bible being the word of god.  The thing is that none of the arguments for the existence of god even approach the idea of a god with the least bit of interest in humanity, let alone that the god described in the Bible is the rather abstract first-mover, or great designer postulated by various Christian proofs.  

If not, has there ever been an argument that you didn't know how to answer, or that surprised you  against your expectations?

Yes, and it still surprises me today.   When people claim that the Gospels were written by eyewitnesses I'm appalled by their lack of critical reading.   And I'm surprised over and over by their persistence in that belief.